Home / 84,007.02-126,012.96-31,406.46

Finding the Fourth Proportional to 84,007.02, 126,012.96 and 31,406.46

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Solution

The fourth proportional to 84,007.02, 126,012.96 and 31,406.46 is: 47,110.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,007.02 : 126,012.96 = 31,406.46 : x
  2. Step 2: Convert to fraction form
    84,007.02/126,012.96 = 31,406.46/x
  3. Step 3: Cross multiply
    84,007.02x = 126,012.96 × 31,406.46
  4. Step 4: Simplify right side
    84,007.02x = 3,957,620,987.72
  5. Step 5: Solve for x
    x = 3,957,620,987.72/84,007.02
  6. Step 6: Final answer
    x = 47,110.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.